1coolmazda

iTrader: (7)

I have been think about my fuel setup and was. Wondering I have a knightsports turbo. And I am running a haltech E8. I have 750cc injectors for the primaries injectors and I have 1200cc injectors for the secondaires. I am scared that 1200cc is going to be to much fuel. I was reading my new import tuner mag and it has the knightsports rx8 with a 13B-REW and they had a persion 60-1trim/0.84 a/r and they are running 550cc for promaires and 850cc for the secondaires. I was wondering I am making a drifter and was thinking if I ran my stock turboII injectors for my primaries and my 750cc injectors for my secondaries. Would I run out of fuel?

RotaryRocket88

iTrader: (7)

There's not really a reason to be scared of large injectors. That's what your haltech will be for: adjusting mixture. I'm guessing this is some sort of knightsports hybrid turbo? Without knowing anything about the exact wheel sizes, you could probably assume it will be able to make power in the 300-350 whp range. A 550/750 setup will run out of injector at about ~300 whp.

Here's a calculator tool that gives a rough estimate of injector limits: http://www.rx7.com/cgi-local/3rdgencalc.cgi

And a thread with lots of calculations you can use to get a more precise estimate: https://www.rx7club.com/3rd-generation-specific-1993-2002-16/feeding-turbo-rotary-horsepower-airflow-fuels-881992/